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    Pure ethylene oxide distillation process
    1.
    发明授权
    Pure ethylene oxide distillation process 有权
    纯环氧乙烷蒸馏工艺

    公开(公告)号：US06833057B1

    公开(公告)日：2004-12-21

    申请号：US09341921

    申请日：1999-07-21

    申请人： Bernd Bessling ,  Hans Hasse ,  Jürgen Plückhan ,  Thomas Mayer ,  Heinz Auer

    发明人： Bernd Bessling ,  Hans Hasse ,  Jürgen Plückhan ,  Thomas Mayer ,  Heinz Auer

    IPC分类号： B01D338

    CPC分类号： C07D301/32 ,  Y10S203/20

    摘要： In a process for purification of ethylene oxide by distillation an aqueous mixture comprising ethylene oxide, formaldehyde and at least 5% by weight of water is introduced via a feed into a distillation apparatus comprising at least one distillation column, the mixture being introduced at a height above the bottom of at least 8 theoretical stages, the ethylene oxide is taken off at the top and in the bottom phase a mixture is obtained which contains less than 5% by weight of ethylene oxide.

    摘要翻译： 在通过蒸馏纯化环氧乙烷的方法中，将包含环氧乙烷，甲醛和至少5重量％的水的含水混合物通过进料引入到包含至少一个蒸馏塔的蒸馏装置中，混合物在高度 在至少8个理论阶段的底部之上，环氧乙烷在顶部被除去，在底部，获得含有小于5重量％的环氧乙烷的混合物。

    Separation of isobutene non-reacted during polymerization of isobutene
    9.
    发明授权
    Separation of isobutene non-reacted during polymerization of isobutene 有权
    在异丁烯聚合反应时异丁烯的分离

    公开(公告)号：US07105616B2

    公开(公告)日：2006-09-12

    申请号：US10473595

    申请日：2002-04-10

    申请人： Heinz Auer

    发明人： Heinz Auer

    IPC分类号： C08F4/06

    CPC分类号： C08F6/003 ,  C08L23/20

    摘要： A process for working up a liquid reaction discharge of the cationic polymerization of isobutene, which substantially comprises polyisobutene, unconverted isobutene and, if required, an inert diluent, is described. Problems with foam formation when the unconverted isobutene is being distilled off are avoided if the heated reaction discharge is let down into a flash container and/or not more than 900 m3/h of vapor are expelled per square meter of liquid surface and/or the resulting foam is destroyed, for example in a wet cyclone.

    摘要翻译： 描述了基本上包含聚异丁烯，未转化的异丁烯和如果需要的惰性稀释剂的异丁烯的阳离子聚合的液体反应排放的方法。 当蒸发掉未转化的异丁烯时，如果将加热的反应物排出物放入闪蒸容器中，并且/或不超过900m 3 / h的蒸气排出每平方 液体表面和/或所得泡沫破坏，例如在湿式旋风分离器中。

    Polyisobutene composition
    10.
    发明授权
    Polyisobutene composition 有权
    聚异丁烯组成

    公开(公告)号：US07049383B2

    公开(公告)日：2006-05-23

    申请号：US10482807

    申请日：2002-07-02

    申请人： Heinz Auer ,  Dirk Borchers ,  Thomas Wettling

    发明人： Heinz Auer ,  Dirk Borchers ,  Thomas Wettling

    IPC分类号： C08F110/10

    CPC分类号： C08F10/10 ,  C08F110/10 ,  C08F2/01 ,  C08F2/001 ,  C08F4/14 ,  C08F2500/02 ,  C08F2500/05

    摘要： A polyisobutene composition having a global maximum of the differential molecular weight distribution curve at a molecular weight Mmax of from 3 500 to 8 000 is described, which comprises at least one local maximum at a molecular weight of from 112 to 560. The isobutene oligomers present act as flow improvers and boiling assistants. They are added to higher molecular weight isobutene polymers, preferably before or in the course of a distillation, for removing unconverted isobutene and/or an inert diluent.

    摘要翻译： 描述了在分子量M max> 3 000至8 000时具有总分子量分布曲线的全局最大值的聚异丁烯组合物，其包含至少一个局部最大值，分子量为 存在的异丁烯低聚物作为流动改进剂和沸腾助剂。 将它们加入到较高分子量的异丁烯聚合物中，优选在蒸馏之前或在蒸馏过程中，用于除去未转化的异丁烯和/或惰性稀释剂。